#include <iostream>
#include <cstdint>
#include <cmath>

using namespace std;

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	
	int32_t A, B;
	cin >> A >> B;

	const int64_t diff = A * INT64_C(5) - B * INT64_C(18);
	if (diff == 0) cout << "same\n";
	else if (signbit(diff)) cout << "blackyuki\n";
	else cout << "KoD\n";

	return 0;
}